Vacuum-cleaner-nozzle adjustment



Aug- 20, 1929- P. H. ROBINSON VACUUM CLEANER lNOZZLE ADJUSTMENT Filed Sept. 24, 1926 lfflf INVENTOR.

carpets in which the length of the Patented Aug. 20, 1929.

`UNITED STATES PATEN PATRICK H. ROBINSON, OF RACINE, WIS

1,725,019 T OFFICE.

cousin, Assicuon To HAMILTON BEACH MFG. CO., F RACINE, WISCONSIN, A CORPQRATIONDF WISCONSIN.

`VACUUMCLEANERNOZZLE ADJUSTMENT.

Application filed September 24, 1926.v Serial No. 137,477.

This invention relates to improvements in vacuum cleaner nozzle adjustments.v

I Inusing a vacuum cleaner on rugs and nap difroximity of the fers, the relation of the ianges according nozzle to the rug surface c to the length of the nap.

cleaners adaptable to any form of vacuum cleaner.`

A iiurther object of the invention is to provide a vacuum cleaner nozzle adjustment which is of very simple construction, is indrawing,

have the portion intermediate the arms 10 the invention consist-s expensive to manufacture, is st`rong and durable, and is welladapted for the purpose described.

lVith the above other objectsin view,- oi the improved vacuum cleaner nozzle adjustment, and its parts and combinations as set forth in thev claims, and all` equivalents thereof.

In tlie acconipanying drawing in which the same reference' characters indicate the same parts in all of the views:

Fig. 1 is a plan View of thesuctionnozzle of a vacuu'm cleaner, parts being broken away and in section to show details of construction;

and 1 Fig. 3 is a fragmentary sectional4 view showing the relation of the brush to the opening of the nozzle mouth, and on a larger scale. l

Referring now more particularly to the it will appear that the numeral 5 indicates the motor housing portion .of a

vacuum cleaner from the forward end port-ion ot which 'depends a suction nozzle 6 having an. open lower=mouth portion 7. Thei'car end portion of the` motor housing is supported by a suitably mounted wheel 8.

A .U-shaped lever member 9 is arranged to extend externally along the rear of the suction nozzle and closely adjacent thereto, and

the parallel arm members 10 extend-inwardcoiled spring 19.

cam member and said lug.

thev cam member Will turn on the stud vwith-v .the knob member when the latter is turned.

Fig. 2 is a side view of the suction nozzle;

ly into the( nozzle housing through slots cut I through the rear Wall of the nozzle and through the rearwardly extending lugs 6 near each side of the nozzle at the rear. The lever 9 is pivotally secured to the nozzle housing by the pins 11 extending through said lugs 6 and through the lever arms 10,

Adjacent ie arm 13, the suction nozzle is.'

provided with a lug portion 15 having a threaded stud 16 extended thereinto. A knob member 17 is revolubly mounted on the end portion of the stud 16 and the knob is formed with an enlarged' bore portion' 18 to receive the head of the stud 16 a-nda Mountedon the stud ,16' inwardly' of the knob member 17 is an eccentric or cam member 2O on theedge of which the .free end portion 14 of thejarm 13 is adapted to ride. The cam member 20 is connectedl'to the knob member 17 by means of a lug 21 extending laterally ,from the .lmob member and a pin 22 passed Athrough the By this means,

A collar 23 is interposed between the cam member and the lug portion 15 of the nozzle to correctly space the cam member.

' In order tov hold the arm 13 firmly in. engagement with the cam member 20, a flat spring'24 is provided which is secured at one end to the arm member, and which yieldingly engages at its free end, the suction nozzle 6,'as clearly shown in Fig: 2. Y By the construction described the major portion of the lever 9 is exterior of the nozzle and closely in rear thereof, and the arms `10 of the lever 9 carrying the wheels 12 are interior of the nozzle housing, but separatedl from vthe suction chamber by the supplemental lwalls 25; and the adjusting mechanism is conveniently locatedexteriorly of the nozzle housing, for actuating the lever 9. The location ot' the-arms 10 and wheels 12 within the nozzle housing is a great advantage in preventing damage to furniture arm will accordingly move the U-lever 9 andycausefthe lower portion of the vacuum cleaner to pivot at its inner end on the wheel 8 to raise and lower the mouth portion of the suction nozzle.

From the foregoing description, it will be seen that the improved vacuum cleaner nozzle adjustment is of very simple and novel construction, and is well adapted for the purpose set forth.

What is claimed as the invention is:

1. The combination with the body of a i vacuum cleaner including a forward suction nozzle, of a floor engaging support pivotally 'carried by the rear end portion of said body,

a lever pivotally secured to said suction nozzle, forward supporting wheels carried by said lever, a cam member rotatably mounted on said bodyy adjacent said lever externally of the'suction nozzle, an arm projecting from said lever andl adapted to ride externally on said cam member, and means permitting manual turning of said cam memberto move said arm and lever.

2. The combination with a body of a vacuum cleaner including a forward suction nozzle, of a floor engaging support pivotally carried by the rear end portion of said body,

a lever pivotally secured to said suction nozzle, forward supporting wheels carriedv by said lever, a cam member rotatably mounted on said body adjacent said lever externally of the suction nozzle, an arm secured to and projecting from said lever and adapted to ride externally on said cam mem ber, and a knob secured to said cam member for turning the same to move said arm and lever to`adjust the height of said suction nozzle mouth from the floor.

' 3. The combination with the body of a vacuum cleaner including a forward suction nozzle, of a floor engaging wheel pivotally carried by the rear portion of the body, a U-shaped lever extending longitudinally of the suction nozzle and pivotally secured thereto, forward supporting wheels journaled in the end portions of 'said lever, a cam member rotatably mounted on said body adjacent said lever and externally of the suction nozzle, an arm rigidly secured at its lower end portion to the lever and projecting upwardly therefrom and adapted tok ride eX- ternally on said cam member, resilient means carried by said arm and engaging the body to hold said arm in engagement with said cam member, and a knob secured to said cam member for turning the same to move said arm and lever to adjust the height of said suction nozzle mouth from the floor.

4. Avacuum cleaner including a housing, a suction nozzle, a ioor engaging support pivotally carried b the rear portion of the housing, a U-shape lever having forwardly extending parallel arms, the lever portion intermediate said arms being located externally of and closely in rear of the suction nozzle, the rear wall of the suction nozzle being slotted to receive the parallel arms of the lever, wheels rotatably carried by said parallel arms near their forward ends and located within the nozzle, the lever'arms being pivotally connected to the nozzle, andadjusting means secured to the nozzle, yexternally thereof and intermediate the lever arms, for actuating the lever and for maintaining it in any one of a lurality of positions.

5. vacuum cleaner including a housing, a suction nozzle, a floor engaging support pivotally carried by the rear portion of the housing, a U-shaped lever having forwardly extending parallel arms, the lever portion intermediate said arms being located externally of and closely in rear of the suction nozzle, the rear wall of the suction nozzle being slotted to receive the parallel arms of the lever, wheels rotatably'carried by said parallel arms near their forward ends and located within thenozzle, the lever arms being pivotally connected to the housing rearwardly of the wheel connections, and adjusting means secured to the nozzle, externally thereof, and` intermediate the lever arms, for actuating the lever and for maintaining it in any one of a plurality of positions.

6.' A vacuum cleaner including a housing, a suction nozzle, a floor engaging support pivotally carried by the rear portion of the housing, a U-shaped lever having forwardly eX- tending parallel arms, the lever portion intermediate said arms being located externally of and closely in rear of the suction nozzle, theI rear wall of the suction nozzle being slotted to Areceive the parallel arms of the. lever, wheels rotatably carried by said parallel arms near their forward ends and located within the nozzle, the lever arms being pivotally. connected to the nozzle, and adjusting 'means secured to the nozzle, externally thereof and intermediate the lever arms, for actuating the lever and for maintaining it in any one of a plurality of positions, said means including a cam fixedly secured to the nozzle, a knob for actuating the cam and an arm sccured to the lever and in engagement with the cam.

In testimony whereof` I afix my signature.

PATRICK H. ROBINSON. i 

